Simplified gravity and magnetic interpretation of contact and dyke-like structures

Abstract

This paper describes one simple procedure which can be applied to the interpretation of gravity or magnetic profiles measured perpendicular to the strike of contact or dyke-like structures or to structures which can be considered as a combination of both. The method is very easy and rapid to apply, is unambiguous within the assumed contact or dyke-like model, is applicable to airborne or ground level data and does not necessarily require computing facilities but may be automated if desired. As the interpretation requires only a relatively short length of traverse (usually less than 3 depth units) in close proximity to the structure, the procedure results in a very high rejection of neighbouring disturbances. In the gravity case the method has the particular advantage of freedom from regional, topographic and latitude corrections and in most applications only a minimum of elevation surveying is necessary.